Editing 2001 Main Logic Assembly (section)

== What it establishes ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table"
|-
! Position !! Part !! Commodore part no.
|-
| '''C7–C10''' || 47 µF 16 V '''electrolytic''' — the only aluminium electrolytics on the board || 900100-33
|-
| C5, C11, C12, C13 || 1.0 µF 25 V '''tantalum''' || 900402-13
|-
| C15–C49 || 0.1 µF 10 V ceramic || 900010-39
|-
| UF3 || 6502 MPU || 901435-01
|-
| UB8, UG8 || 6520 PIA || 901436-01
|-
| UA5 || 6522 VIA || 901437-01
|-
| UC3, UC4, UI1–UI8, UJ1–UJ8 || '''6550 RAM''' (assemblies 320008, 320081) || 901438-01
|-
| UC3, UC4, UI1–UI8, UJ1–UJ8 || '''2114 RAM''' (assemblies 320132, 320137) || 901453-01
|-
| UA2 || 6540-010 character generator || 901439-08
|-
| UA2 || 2316B-08 character generator || 901447-08
|-
| UH1–UH7 || 6540-011/-012/-013/-014/-015/-016/-018 ROMs || 901439-01 to -07
|-
| UH1–UH7 || 2316B-01 to -07 ROMs || 901447-01 to -07
|-
| UA7, UA8, UA9 || MC3446 IEEE-488 bus transceiver || 901524-01
|-
| Q1, Q4 || TIP29 — cassette motor drivers, '''not''' regulators || 902653-01
|}

Sheet 3 records a '''later ROM revision''' not shown elsewhere: UH1 as '''6540-019 ROM (rev.)''', part 901439-09, or '''2316B-09 ROM (rev.)''', part 901447-09.

Sheet 3 also gives the socket types, which matter when replacing one: '''28-pin''' and '''24-pin''' for UA2 and UH1–UH7 (the two ROM families are not the same pin count), '''40-pin''' for UA5, UB8, UF3 and UG8, and '''22-pin''' for the eighteen RAM positions.